FOWLER, Mich. — A Global Positioning System (GPS) device can help farmers make the most of their manure management plan.
Producers learned about the technology during the Great Lakes Manure Handling Expo July 27 at Berlyn Acres near Fowler, Mich.

“The technology gives farmers ways to better document manure application rates and placement as you come under increasing scrutiny from environmental interests,” said Jay Solomon, an Extension specialist with the University of Illinois.

Participants in the session were introduced to the equipment and software needed to map field boundaries, record the travel path of the equipment and collect as-applied manure data, which could then be used as verification of nutrient management plan compliance. A hands-on demonstration sent seminar attendees across a field with a hand-held GPS unit to determine boundaries for manure application around a water well.

University of Illinois Extension Specialist Pete Fandel, who presented the seminar with Solomon, said that one of their research goals was to devise a lower cost GPS plan to assist farmers with their manure management.

The two researched and tested several GPS units before settling on a hand-held model that costs about $1,500 vs. the $5,000-$10,000 cost of a commercial unit. In addition, they suggested several software options that vary in price depending on the producer’s needs.

“One of our goals was to put together a system that was affordable and easy to use,” Fandel said.

The pair said that GPS data collection is a valuable management tool for many reasons.

“One of the things you have to think about are places you aren’t supposed to apply,” Solomon said.

“You can be more accurate as a producer,” Fandel said. “You can use the data to prove that you did what you’re supposed to do in terms of your manure management plan.

“The technology increases the value of manure to crop producers by providing documentation on N, P and K placement with geo-referenced fertility maps.

“The software allows you to collect boundaries or data points of an area. You can grid soil samples, manure application, tillage records. Basically anything you do out in the field can be recorded with one of these systems.”

“You can create as-applied manure maps to document where every gallon went in the field. From a lawsuit standpoint it becomes very good documentation.”